### Namespace

# GioUnix – 2.0

Unix-specific APIs in Gio

Version | 2.84.1
Authors | GLib Development Team
License | LGPL-2.1-or-later
Website | https://www.gtk.org
Source | https://gitlab.gnome.org/GNOME/glib/

#### Build

C headers | `gio/gdesktopappinfo.h, gio/gfiledescriptorbased.h, gio/gio.h, gio/gunixfdmessage.h, gio/gunixinputstream.h, gio/gunixmounts.h, gio/gunixoutputstream.h`
pkg-config files | `gio-unix-2.0`

#### Dependencies

GLib—2.0 | The base utility library
| Browse documentation
GModule—2.0 | Portable API for dynamically loading modules
| Browse documentation
GObject—2.0 | The base type system library
| Browse documentation
Gio—2.0 | A library of useful classes for I/O, networking and IPC
| Browse documentation

#### Additional documentation

- UNIX Mounts
- Classes Hierarchy

#### Classes

DesktopAppInfo | `GDesktopAppInfo` is an implementation of `GAppInfo` based on desktop files.
FDMessage | This `GSocketControlMessage` contains a `GUnixFDList`. It may be sent using `g_socket_send_message()` and received using `g_socket_receive_message()` over UNIX sockets (ie: sockets in the `G_SOCKET_FAMILY_UNIX` family). The file descriptors are copied between processes by the kernel.
InputStream | `GUnixInputStream` implements `GInputStream` for reading from a UNIX file descriptor, including asynchronous operations. (If the file descriptor refers to a socket or pipe, this will use `poll()` to do asynchronous I/O. If it refers to a regular file, it will fall back to doing asynchronous I/O in another thread.).
MountMonitor | Watches for changes to the set of mount entries and mount points in the system.
OutputStream | `GUnixOutputStream` implements `GOutputStream` for writing to a UNIX file descriptor, including asynchronous operations. (If the file descriptor refers to a socket or pipe, this will use `poll()` to do asynchronous I/O. If it refers to a regular file, it will fall back to doing asynchronous I/O in another thread.).

#### Interfaces

DesktopAppInfoLookup | `GDesktopAppInfoLookup` is an opaque data structure and can only be accessed using the following functions. deprecated: 2.28
FileDescriptorBased | `GFileDescriptorBased` is an interface for file descriptor based IO. since: 2.24

#### Structs

MountEntry | Defines a Unix mount entry (e.g. `/media/cdrom`). This corresponds roughly to a mtab entry.
MountPoint | Defines a Unix mount point (e.g. `/dev`). This corresponds roughly to a fstab entry.

#### Callbacks

DesktopAppLaunchCallback | During invocation, `g_desktop_app_info_launch_uris_as_manager()` may create one or more child processes. This callback is invoked once for each, providing the process ID.

#### Functions

is_mount_path_system_internal | Determines if `mount_path` is considered an implementation of the OS.
is_system_device_path | Determines if `device_path` is considered a block device path which is only used in implementation of the OS. since: 2.56
is_system_fs_type | Determines if `fs_type` is considered a type of file system which is only used in implementation of the OS. since: 2.56
mount_at | Gets a `GUnixMountEntry` for a given mount path. deprecated: 2.84
mount_compare | Compares two Unix mounts. deprecated: 2.84
mount_copy | Makes a copy of `mount_entry`. deprecated: 2.84 since: 2.54
mount_entries_changed_since | Checks if the Unix mounts have changed since a given Unix time.
mount_entries_get | Gets a list of `GUnixMountEntry` instances representing the Unix mounts. since: 2.84
mount_entries_get_from_file | Gets an array of `GUnixMountEntry`s containing the Unix mounts listed in `table_path`. since: 2.84
mount_for | Gets a `GUnixMountEntry` for a given file path. deprecated: 2.84 since: 2.52
mount_free | Frees a Unix mount. deprecated: 2.84
mount_get_device_path | Gets the device path for a Unix mount. deprecated: 2.84
mount_get_fs_type | Gets the filesystem type for the Unix mount. deprecated: 2.84
mount_get_mount_path | Gets the mount path for a Unix mount. deprecated: 2.84
mount_get_options | Gets a comma separated list of mount options for the Unix mount. deprecated: 2.84 since: 2.58
mount_get_root_path | Gets the root of the mount within the filesystem. This is useful e.g. for mounts created by bind operation, or btrfs subvolumes. deprecated: 2.84 since: 2.60
mount_guess_can_eject | Guesses whether a Unix mount entry can be ejected. deprecated: 2.84
mount_guess_icon | Guesses the icon of a Unix mount entry. deprecated: 2.84
mount_guess_name | Guesses the name of a Unix mount entry. deprecated: 2.84
mount_guess_should_display | Guesses whether a Unix mount entry should be displayed in the UI. deprecated: 2.84
mount_guess_symbolic_icon | Guesses the symbolic icon of a Unix mount entry. deprecated: 2.84 since: 2.34
mount_is_readonly | Checks if a Unix mount is mounted read only. deprecated: 2.84
mount_is_system_internal | Checks if a Unix mount is a system mount. deprecated: 2.84
mount_points_changed_since | Checks if the Unix mount points have changed since a given Unix time.
mount_points_get | Gets a list of `GUnixMountPoint` instances representing the Unix mount points.
mount_points_get_from_file | Gets an array of `GUnixMountPoint`s containing the Unix mount points listed in `table_path`. since: 2.82
mounts_changed_since | Checks if the Unix mounts have changed since a given Unix time. deprecated: 2.84
mounts_get | Gets a list of `GUnixMountEntry` instances representing the Unix mounts. deprecated: 2.84
mounts_get_from_file | Gets an array of `GUnixMountEntry`s containing the Unix mounts listed in `table_path`. deprecated: 2.84 since: 2.82

#### Constants

DESKTOP_APP_INFO_LOOKUP_EXTENSION_POINT_NAME | Extension point for default handler to URI association. See Extending GIO. deprecated: 2.28